The singer shared pictures from the cute party, which was organized by celebrity event planner Mindy Weiss and hosted by Shelli Azoff, the wife of music manager Irving Azoff.
“Baby shower!! Can’t believe im pregs thank u Shelli Azoff for a beautiful #girlyday = blessed,” wrote the 44-year-old star with a picture of the delicious-looking blue-themed treat table at the bash, held at the Wolfgang Puck dining room at the Hotel Bel Air.
Stars joining Gwen at the party included Nicole Richie, stylist Rachel Zoe, Gwyneth Paltrow and Jessica Alba.
Mum-of-two Jessica was spotted arriving bearing a gift – an organic diaper cake from her The Honest Company. The 'cake' is made up of real eco-friendly nappies, wipes, lotions and bubble bath.
Other photos shared by Gwen included one of a baby cakepop and a multi-tiered cake which was, “for my baby”, according to Gwen.
She also posted a closeup selfie with the caption: “#babyshowertime #gettingclosenow gx”